Planoqhaph co



F. F. PULVER.

FILM WINDING MECHANISM FOR CAMERAS.

APPLICATION FILED IAN-6,1919.

Patented Aug.

5 SHEETS-SH E lNuTON D c F. F. PULVER.

FILM WINDING MECHANlSM FOR CAMERAS.

Patented Aug. 5, 1919.

5 SHEETSSHEET 2- mz/mma 7M, IVLBGY Z ATTORNEYS AEPLICATION FILED JAN.6, 1919.

F. F. PULVER.

FILM WINDING MECHANISM FOR CAMERAS.

APPLICATION FILED JAN. 6, I919. 1,811,996, Patented Aug. 5, 1919.

5 SHEETS-SHEET 3- INVENTOR. fi'

-%;f/A TTORNEYS.

TIIE COLUMBIA PLANOGRAPII c0, WASHINGTON, n. c.

F. F. PULVER.

FILM WINDING MECHANISM FOR CAMERAS; APPLICATION FILED JAN. 6,1919. 1,311,996, 7 Patented Aug. 5, 1919.

5 SHEETSSHEET 4.

Ly l/VVE/I/TOR A TTOR/VEVS THE COLUMBIA FLANOGRAPH co-. WASHINGTON D c F. F. PULVER.

FILM WINDING MECHANISM FOR CAMERAS.

Aw IT m ma A H M t .n.5 a P a M I 6 N A I. D E L H N m T A L P P A llllll Ill k\ I IN l/E/V TOR git/,6 (7

BY a ATTORNEYS FRANK F; runynn, oritooiinsrnn, YORK, ass st-0R? or assassins T0 IiIBBIE H PULVER, "or ADAMSiB'AS INQ YORK.

*FiLM-WINIDING ivincnemsmwoe cnivrnnas.

Specification Queue-rs Patent. j Paficnt dAfi 5,31919.

Application filed Jan-uary e, 1919. serial No. 269,870.

T 0 all wit-02a it may concern:

'Be it known that I, FRANK RPiiLVER, a

citizen of the United States andresident of Rochester, in the county of Monroe and State of New Yorkphave inventedcertain new 'and useful Improvements in Film- Winding Mechanisms for Cameras, of which the, following isaspecification. y y e The present .inyention -relates film winding mec anism for cameras and more particularly to the type in which-a hiotor released after each picture is taken sotthat a new portion of a film is presented to the exposure lens of a camera, an object of this invention being to? provide improved construction in which 1 a stop for the motor is eflectiyely controlled so f that equal amount of film is shifted after each exposure notwithstanding the increased diameterof the film on the film spool.

To this and other ends theinvention con sists of certain parts and combinations of parts all of which be hereinafter described, the noyel features being pointed out in the appended claims.

ln the drawings g e Figure 1 is a front View of i a camera equipped with the present; invention;

Fig. 2is a rear view of the same camera;

Fig. 3 is a fragmentary side view of the camera and shows in "plan View the film winding mechanism adjacent thebase plate of the supporting frame, such frame being shown in section as along the 11ne 3e3 of Fig. 9;

Fig. 4 1s a detail View showin g the stopor detent cooperating with-the goyernowof the motor; 1

Fig. 5 is a detail iew showing the resetting connection between the camera back and the film winding mechanism;

Fig. 6 is-a detail iew showing the connection between theunotor and the spool shaft; I y y Fig. 7 is a top plan View of the film winding mechanism, and illustrating particularly the controlling member for the motor. stop or detent and the manner inwhich themo e ment of the controllerisyariedy L8 is a sectional View of the support F1 ing frame as along the line 8-8, Fig. .9, and shows in bottom .plan View the (parts of. the a m windin methaniem above such mist 1. H. 1..

9 is ,an end View. from the'le ft with jrespectftofFigsf an d 7, of the frame on hi th par s r su po F g. 10 an enlarged detall the partssh own: inFigtY p v .Flg. ll is a side view of theparts shown ln-F a Fi 1 is lasabe the: ease for fishiftnig the controlling memberfor the m0- tor stop;

Fig. 13 1s a detailyiewshowing the inanner (in which the swinging frame stops against the main frame 5 Figfll 's a detail-view showing the parts the controller; connecting with the motor 'and' he m o t p;

Figfllo is adetail yiew ofthe connection :between the motor and thecontroller for I the inotor stop Fig. 16. isfa: detail View showing the man- :ner in which the controller isstopped in. dlfierent .positlons Fig. 17 "is aldetail sectional yiew of the controller; and e e I Fig. 18 is a detail seotional View ofthe stop member'for"the controller.

Referring more particularly tothe drawings, 1 indicates auroll film camera of; the type in which the film is unwound from one spool and wound upon another ispool to bring successive portions ofthe film to the ,exposure field of the camera. Thiscalnera isproyided with the usual film winding key 2, which is adapted to hereceiyed withinthe slot of. one of the spools 2?.for thefpurpose of turning said spool to wind-thefilm thereon, as is usualin cameras of this type. This key hasfashaft 3 whichis axially movable for the purpose of bringing the key into andout oftheslot ofthe spool for the inserti on or removal of the spool, thisfshaft havingatj its outer end a finger piece 4 by which the key may be turnedormoved axially. A spring 5 is arranged withina head; member (Sand abuts atone end against I the shaft, while the other end engages the. member 6 for the purpose of holding thekey 2 in its. innermost position.

View bf some The. key isqadapbedto bedriven 'bya motor iwhichflin this instance, is-in thBfOI'IIL of a spring? arranged within a drum 8 conend to a casing having connection, by

means of a clutch 16 of any preferred type,

to the head member 6. A feather and slot connection 6 :causes the member 6 to rotate with the shaft 3 but permits an axial movement of the latter, with reference to the gear 13, for the purpose of withdrawing the key from the spoolfas previously set forth;

while the clutch 16 permits the shaft 3 to be rotated in one direction independently of the gear 13 so that the key" may be turned to be properly positioned with reference to the slot in the film spool, and to wind the remaining portion of the backing sheeton the spool after all exposures have been made. The motor may be provided with a governor, which is,'in this instance, in the formv of a fanblade 17 on a shaft18 which is geared to a gear wheel 19 fixed on a shaft 19 the latter, in turn, having connection by .a pinion19 toa gear wheel 20 which, by a pinion 21, connects with the gear wheel 12. The motor is also'provided with a suitable stop or detent which, in'this instance, comprises an arm 22 pivoted at 23 and having its'end 24 movable into and out of the path of a spring arm 25 on the shaft of the fan blade 17. A spring 26 acts on the shaft 23 to normally-hold the end 24 of the stop arm 22in the path of the arm 25011 the fan blade 17. I An arm 23 is provided on the' shaft 23 to cooperate with "a rod 23 in order to limit the swinging movement of the shaft 23 under the action of the spring 26..

A controller for the stop mechanism may be provided and comprises, in this instance, a circular disk 27 having a notch 28 in its periphery. This disk cooperates with the end 29 of an arm 30 which extends from the shaft 23, it being apparent that when the end 29 lies withinthe notch or recess 28, the

j end 24 of the stop arm 22 will lie in the path ;disk 27 the end 24 of the arm 22 will lie out 55 I shaft 18 and in this way permit the operation of the motor to drive the shaft 3 of the film'winding'key 2.

of the path of the arm 25 On the governor The controlling disk o rme mber 27 is operrated in one direction by the'm'otor, and for this purpose its shaft 31 carries a gear wheel 32 which is adapted to mesh with a one-tooth -pinion 33 on the shaft 34. ,The shaft 34 has a :pinion35 on its-inner end which meshes with the gear 20 so that upon the operation of the spring motor the gear 32 will be rotated by the one-tooth pinion 33. In order that the single tooth of the pinion will not lie in engagement with the gear 32 while the motor is at rest, the shaft 34 is provided with a notched disk 36, the periphery of which cooperates with the end 37 of an arm 38 which extends from the shaft 23. The notch of this disk is so positioned that the end 24 of the stop arm 22 cannot more into cooperation with the governor arm 25, while the single tooth of the pinion 33 is engaged with the gear wheel 32. The spring pressed pawl 39 pivoted at 40 on the frame of the machine cooperates with the teeth of the gear wheel 32 to hold the latter in a position to which it is shifted by the one-tooth pinion 33. The movement of the controller member 27in a direction opposite to the direction in which it is moved by the spring motor is effected by a volute spring 4-1; and a rocking movement of. the controller together with the gear 32 is effected in a manner hereinafter set forth.

For the purpose of setting the controller member 27, the latter and the gear wheel 32 with their common shaft 31 are mounted on a swinging frame 42, pivoted at 43 on the main frame of the film winding mechanism. This swinging frame has a projecting portion 44 extending through a slot 45 in the plate 46 of the main frame, and engaged by a spring 47, which is anchored at 48 to the plate 46. This projection 44 is also engaged by an arm 49 on a rock shaft 50 journaled on the plate 46 of the main frame. and having an arm 51 which is adapted to be engaged by a manually operable plunger 52. A depression in this plunger. in the manner shown in Fig. 12, shifts the swinging frame 42 to carry the controller 27 away from the end .29 of the arm 30, and also to carry the gear wheel 32 away from its retaining pawl 39 and its driving gear or pinion 33. lVhen the gear 32 passes away from its retaining pawl 39, the spring 41 comes into action, and

shifts the gear with the controller 27 in the direction opposite to that which these parts have been turned by the spring motor. Upon the release of the plunger 52. the spring 47 returns the gear 32 into coiiperation with its retaining pawl 39 and at the same time the periphery of the controller 27 is brought into engagement with the end 29 ofthe arm 30, thus causing said arm to be moved to turn the shaft 23, thereby bringing the end 24 of the stop arm 22 out of the path of the arm 25 on the governor. This operation permits the rotation of the spring motor in order to shift the film the required distance and at the same time to turn the gear 33 until such time that the notch 28 is brought opposite the end 29 of the arm 30.

when said: e11d::129 "will enter the notch; thus, providedthe notch in the disk .36 l is in properrelation to the end 3710f the :-arm 38, causing 1 the stopping of the spring'motor.

":Itis apparent. that, owing to. the fact that the. filmas itavindsi on thespoolincreases in diameter, the amount: of turning of theilfilm Winding keylenust be varied to compensate forvthis difference in thediameter of the film on the "spool; Normally the controlling memberw27 rotates under-the action ofthe spring el untiluan "abutment or stop 53 on said-l controlling memberco'cipeuates with the stop 54 on theswinging frameAQ. Associated withisthestop 54 is a stop unember 55 which is mounted 1 to turn about an axis 56 on the swinging frame :42. v A spring 57 tends normally to 'hold said stop member in one position. iThisstop member is provided with a projectingpart 55 having a series of stop :surfaces 58xwhich,xin the initial ,position of the film winding mechanism, lie out of "the: p athof. the: prog ecti'on53 to permit said projection to cotipenate withithe stop :54 on the first operation of the film winding-mechanism afterthe latter has beenset for a new film. On the successive operationsofthe film winding mechanism, the successive stops '58 arebrought into coiiperation withthe stop 53, thus agna'dually shortening "the return movement ofthe controller 27' under the -action ofits spring 41,: so thata-thegear 32 has a smaller turning movement onthe successive operations of the motor, the filmwvind- *ing key being. turned-accordingly.

For automatically shifting the stops 58 successively into stopping position,the stop member 55 has a toothed aperiphery 59 with which two spring-pressed pawls '60 and 61 cooperate. The pawlw60is pivoted at 62 to the plate 46 of the mainframe, while i the pawl 61 is pi-voted at 63=t0 the swinging frame 42. Wilith this arrangement, when the swinging frame is unoved "to-Ward the a pawl 60*under the action of the plunger 52, said pawl 60 coiiperates with the teeth59wand i turns to stop member 55 one tooth, in which position said stop member '55 will be held by the;pawl 61, until such a l time that. the: pawl 61 shall "co'ciperate with a the mutilated portion' 64: of the'stopinember 55,when nofurther turning of the stop member will take place, due to the fact thatthepawlbl cannot hold the member 55 inanypositionbe yond the mutilated portion.

To the en d that the stopimember 55 may be returned-to its-initial position, under the action of the spring 57, theipawls'tidand 61 are movable out of engagement with the teeth 59. This 'movement, in this instance,

is effected through the removal of the 1 back 65 of the camera, said back having a 1 plate 66 secured theretoand extended be ond one side of the camera casing" to I coiipenate with thearmu67formed on a rock shaft 68, this rock-"shaft-also=having another arm 69 with which a spring 70 coeperates, for the purpose :of: maintaining thewarm 67 against the extension of "the plate 66, the armmoving under the spring 70 to turn the rock shaft 168 when the camera back is removed. The ar1n-69-has a portion "operating in a slot 71 formed. in the slide 72, which is guided at 73 and 753? on the swinging frame 42. This slide 72::controls'the tWo pawls 60 and 61, andto this end engages a pin or projection 74:01'1thepa'W160 to move said pawl'against the action of its spring 7 5, in order to carry the pawl outwof engagement with the teeth 59wofthestopwmember 55. The slide 7-2 also has. a projection 7 6 which cooperateswith thel projection77 on thepawl 61 to move said i pawl against the action of its springs .78 in order to carry the, pawl out of engagement with the teeth 59 of the stop member 55. moved out o-fengagement with the stop member 55, dueto the removal of. the camera back, the stop member 5 5 Wllljflllll under the action of its spring 57 until such a time that'the, 1 projection 7 91011 the stop member shall coiiperate with the pawl 61% in the manner shown in Fig. 10. *When the camera backisa again placed lIlyPOSllllOILoll the camera, therock shaft 68 will be turned to shift the. slide 7 2-in order to permit thesprings of theipawls 60\and 61 to-throW such pawls into cooperative relation with the teeth 59 l of the, stop member 55. i

i The winding of the springmotormay be efiected by afingerpiece 80 on the spring shaft 81, and also situated 011 this shaft is a ratchet 82 with which the spring pressed 1 pawl 83 coiiperates to hold the spring shaft inlits adjustedrposition. The film winding :mechanismds inclosed within a casing 8% having? a removable cover plate 85,; the base WVhen both of the pawls have been :QJlate lGPof theisu ooortinv frame bein sei l a: s

cured to one side of the camera. The casing 8'1 may have a seat 89 for the bulb 90 which by a tube i 9 l connects with a shutter 92 of any suitable; construction to eifectthe open- A ingand. the closing of the shutter by pressure "on the bulb. An extension 93011 the plunvger 52 engages the bulb tocompressthe same I when the a plunger is push ed.

The operation of heinvention willbe understood 1 from the foregoing: description, but

the same time, the swinging frame 42 is shifted in order to carry the controller 27 awayf'rom the lever end 29, thus permitting the controller to rotate in order to bring its stops 53 into co'ciperation with the stop 54. The stop member 55 is also rotated by the pawl 60 to bring one of the stop faces 58 into position for limiting the controller 27 on the next action of the latter. With the release of the plunger 52 the swinging frame 42 will return to its original position and the controller 27 will engage the end 29 of the arm 30 to turn the shaft 23 so that the end 24of the arm 22 will free the governor shaft 18 and permit the spring motor to operate and turn the stem of thewinding key 2. This operation will continue until such time that the end 29 enters the notch 28 in the controller 27 and the end 37 of-the arm 38 enters into the notch in the disk 36, when I the end 24 of the arm 22 will pass into the path of the arm 2'5'on the governor shaft 18. On successive operations of the plunger 52 the stop member 55 continues its rotation under the action of the pawl 60, each time shortening the movement of the controller member '27 until the mutilated portion 64 is reached by the pawl 61. This will indicate to the user of the camera that the last film has been used and the film spool is then manipulated through the film winding key to wind the remaining portion of the back ing sheet on the spool. The camera back is then opened,-and this releases the rock shaft 68 of the spring 70, permitting the slide 72 to shift the'pawls 60 and 61 out of connection with the stop member 55, whereby the stop member is permitted to rotate to its initial position bringing the stop device 7 9 against the pawl 61, this movement of the 7 stop member taking place under the action of the spring 57 When the camera back is again placed on the camera with anew film in position, the film winding mechanism is effecting the operation of the stop to stop the motor, said means having a provision, independent of the stop, for varying the action of the motor to correspond with the amount of film wound on the spool of the film winding mechanism.

f 2. A film winding mechanism comprising a driving motor, a stop for the motor, a controller for the stop movable under the action of the motor during the Winding of the film to hold the stop out of coeperation with the motor for a definite time, and means,

independent of the stop, for varying the duration of the time of movement of the controller to correspond with the amount of film on the spool of the film winding mechanism.

3. A film winding mechanism comprising a driving motor, a stop for the motor, a rotary controller for said stop, said controller being movable to cause the stop to release the motor, a spring for rotatingthe controller after such movement of the said controller, and a connection between the controller and the motor for ro- 'tating the controller to tension the spring and to cause the stop to enter into stopping relation with the motor. 4. A film winding mechanism comprising a driving motor, a stop for the motor, a manually releasable controller for the stop, a spring for shifting said controller in one direction, and a connection between the controller and the motor for causing the latter to shift the controller in the other direction.

5. A film winding mechanism comprising a driving motor, a stop for holding said motor against action, a controller for holding said stop out of detaining relation with said motor for a definite time after such stop releases said motor, said controller being movable to cause the stop to release the motor, and a connection between the controller and the motor for causing the latter to move the controller to permit the stop to enter into detaining relation with the motor.

6. A film winding mechanism comprising a driving motor, a stop for the motor, a rotary controller for the stop, a spring for moving said controller in one direction, means for shifting said controller to cause the stop to release the motor and to permit the spring to turn the controller, and a connection between the controller and the motor for causing the controller to operate against the action of-its spring in order to effect the operation of the stop into stopping relation with the motor.

7. A film winding mechanism comprising a driving motor, a stop for the motor, a rotary controller for the stop, a spring for moving said controller in one dicction, a driving connection between the motor and the controller for moving the controller against the action of the spring, and means for shifting said controller to cause the stop to release the motor and the motor to become temporarily disconnected from the controller in order that the spring may act on the controller.

8. A film winding mechanism comprising a driving motor, a main frame on which the motor is'mounted, a stop for the motor, a

rotary controller for the stop, a frame on which the rotary controller is mounted, said frame being movable to cause the stop to release the motor, aj spring acting onthe controller upon the movement of said frame, and a driving connection between the controller andthe motor embodying a gear on the movable frame and a gearon the main frame, said gears being disconnected when the movable frame is shifted tocause the stop to release the motor.

9. A film winding mechanism comprising a driving motor, a stop for the motor, a

controller for the stop, a spring for mov- 111g sald controller in one dlrectlon, driving connection between the motor and the controller for moving the controller in the other direction, and variable stopping means for cooperation with the controller to change the movement of the latter under the action of the spring.

10. A film winding mechanism comprising a driving motor, a stop for the motor, a controller for effecting the starting and the stopping of the motor through said stop, a driving conection between the controller and the motor for moving the controller in one direction, said driving connection having provision to release said controller for movement in the other direction, and a spring for moving the controller in the other direction, and variable stopping means for cooperating with the controller to determine its movement under the action o the spring.

11. A film winding mechanism comprising a driving motor, a stop for the motor, a controller acting through said stop to start and to stop the motor, a driving connection between the motor and the controller to move the controller in one direction, said driving connection having provision permitting the movement of the controller in the other direction independently of the motor, a spring for moving said controller in. the other direction, and automatically shiftin means for cooperating with the controller to vary the movement of such controller under the action of the spring.

12. A film, winding mechanism comprising a driving motor, a stop for the motor, a controller for the stop movable under the action of the motor during the winding of the film to cause the stop to stop the motor at a certain time, and automatically shifting stopping means, independent of the stop of the motor, cooperating with the controller to vary the duration of the time of movement of the controller on successive operations of the motor.

13. In a roll film camera having a movable back to introduce the film, a film winding mechanism comprising a motor for driving the film, a stop for the motor, a controller for the stop having means asso ciated therewith to decrease, on successive operations of the stop, the time during which the stop is held out of detaining 113- lation with the motor, and a connection between; the movable camera baclrand said means for resetting said means on the movemerit of the camera back in introducing a new film in the camera.

14; A film winding mechanism comprising a-inotor, for driving the film, a stop for the motor, a controller for thestop having means associated therewith for varying the action of the motor to correspondwith the amount of film wound on the spool of the film winding mechanism, and means for resetting such means.

15. In a roll film camera having a movable back to introduce the film, a film winding mechanism comprising a motor, a stop for the motor, a controller for the stop, a spring for shifting said controller in one direction, a connection between the controller and the motor for causing the latter to shift the controller in the other direction, said connection having provision permitting the controller to move under the action of the spring, means associated with the controller to decrease, on successive operations of the motor, the time during which the stop is held out of detaining relation with the motor, and a connection between the movable camera back and said means for resetting said means on the movement of the camera back in introducing a new film in the camera.

16. A film winding mechanism compris ing a motor for driving the film, a stop for the motor, a controller for the stop, a connection between the controller and the motor for causing the latter to shift the controller in one direction, said connection having provision to permit the controller to move in the other direction, a spring for shifting said controller in said other direction, and means associated with the controller to de crease on successive operations of the motor the time during which the stop is held out of detaining relation with the motor.

17.- A film winding mechanism comprising a motor for driving the film, a stop for the motor, a controller for the stop, a connection between the controller and the motor for causing the latter to shift the controller in one direction, said connection having provision for permitting the controller to move in the other direction, a spring for shifting said controller in the other direction, an automatically shifting stopping means for cooperating with the controller to decrease,

on successive operations of said motor, the

time during which the stop is held out of detaining relation with the motor, and means for resetting said stopping means to its initial position.

18. A film winding mechanism comprising a motor for driving the film, a stop for the motor, a controller for the stop, a connection between the-controller and the motor for causing the latter to shift the controller in one direction, said connection having protary stop member having a plurality of stops thereon for cooperation with the controller to limit the movement of the latter 10 under the action of the spring, step-by-step feeding devices for said rotary sto 3 member, said feeding devices being mova le to release the stop member to permit the latter to return to its initial position, and a spring 15 for moving said stop member to its initial position.

FRANK F. PULVER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

